Single filing machine



Dec. 23, 1958 Filed June 15, 1956 R. F. KRUPP ETAL SINGLE FILING MACHINE 4 Sheets-Sheet 1' INVENToRs. 0554@ ,Q /(Rupp By JAW K, WHG/vee /rw-MMX .pv/dm I HTTOQNE V5.

Dec. 23, 1958 R. F. KRUPP ET AL 2,855,490

SINGLE FILING MACHINE Filed June l5, 1956 4 Sheets-Sheet 2 ,QTTORNE VS,

DSC. 23, 19518 R. F. KRUPP ET AL 2,865,490

SINGLE FILING MACHINE Filed June l5. 1956 4 Sheets-Sheet 3 ,QTTO RNE V5 Dec. 23, 1958 R. F. KRUPP ET Al. 2,355,490

SINGLE: FILING MACHINE Filed June 15, 1956 4 Sheets-Sheet 4 9v FIG.

INVENToRs. /QJQE/ar F Kev/JP mv K. WAGNER mld/72H4 SINGLE FILING MACHINE Robert F. Krupp, San Lorenzo, and .lan K. Wagner, Oakland, Calif., assignors to Gerber Products Company, Fremont, Mich., a corporation of Michigan Application June 15, 1956, Serial No. 591,658 17 Claims. (Cl. 198-3) This invention relates to a new and improved single filing machine wherein a plurality of containers are deposited on' a pallet in a large, regularly-arranged group consisting of a plurality of ro-ws and columns and are automatically placed upon a conveyor in single file.

It will be understood that in canneries and similar processing plants, containers such as glass jars are received from the container manufacturer in shipping cartons, the contain'ers being arranged in the cartons in columns and rows. One means of removing the containers from the cartons is illustrated and described in co-pending patent application Serial No. 500,546 filed April 11, 1955 for Jar Handling Machine, now Patent No. 2,818,987. After the containers have been unloaded, it is frequently desired to wash the containers, one machine for accomplishing this result being illustrated in co-pending patent application Serial No. 519,318 led July 1, 1955, for Glass Jar Washing Machine, now Patent No. 2,826,207.

In' order properly to insert the containers in such washing or other processing machines, it is frequently necessary that the containers be arranged in single tile. The present invention provides a means whereby such results may be accomplished.

One of the features and advantages of the present in`- vention is the fact that a machine is provided wherein a group of containers, such as the group corresponding to the arrangement of containers in a shipping carton used to transport the containers from the manufacturer, is received on a pallet and then carried through the machine while various separating and transfer operations are performed, the containers finally being assembled on a conveyor in single file. v

Another feature of the invention' is the fact that the single tiling machine hereinafter described in detail may be installed in a container handling line between two other machines, such as an unloader and a washer, so that a continuous ow of containers results without the necessity of manual movement.

A further important feature of the invention is the fact that the containers are positively moved in a definite path and without contact with other containers, thereby greatly reducing damage to the containers or breakage thereof.

Another advantage of the invention is that no screw, star wheel, mechanically actuated arm or other moving parts are employed, with the exception of moving conveyors. Screws, star wheels and moving arms may impede passage of a container or crush the same, particularly in' the event of maladjustment as a result of operating wear.- In the present invention timing is accom plished by stationary parts, except for the moving conveyors.

Other objects of the present invention will become apparent upon reading the following specification and referring to the accompanying drawings in which similar characters of reference represent corresponding parts in .each of the several views.

- Patented Dec. 23,1958

In the drawings: y

Fig. 1 is a side elevation of a single tiling machine and parts of associated machines;

Fig. 2 is a schematic perspective view showing the conveyors employed in accordance with the invention;

Fig. 3 is a horizontal sectional view taken substantially along the line 3-3 of Fig. 1;

Fig. 4 is an enlarged perspective view of a pallet;

Figs. 5 and 6 are fragmentary schematic plan views showing how the machine is changed over to handle jars of different sizes;

Fig. 7 is an enlarged plan of a pallet, the upper half of the view showing the pallet construction for small diameter jars, as shown in Fig. 5, and the lower half of the view showing the pallet construction for large diameter jars, as shown in Fig. 6;

Fig. 8 is a transverse vertical sectional view taken substantially alongthev line 8 8 of Fig. 1;

Fig. 9 is a fragmentary side elevation of a drive chain adjustment viewed along the line 9 9 of Fig. 3;

Fig. l0 is a transverse sectional view of the structure of Fig. 9 taken substantially along line 1 0-10 of Fig. 9; and

Fig. 1l is a fragmentary transverse sectional view taken v substantially along line 11-11 of Fig. 1.

The present invention is shown in Fig. 1V installed between a container unlo-ading machine 21, such as that illustrated in application Serial No. 500,546 and a jar washing machine 22, such as that illustrated in application Serial No. 519,318, it being understood that this arrangement of the respective machines is subject to considerable modification. However, the unloading, single filing and washing machines may be driven in synchronism as a unit and are so illustrated and hereinafter described. Accordingly, the main shaft 23 of the present invention is driven by means of chain 24 around sprocket 26 from a shaft (not shown) on the machine 22, which is driven by a motor (not shown). As seen particularly in Fig. 3 and as hereinafter described, the various shafts of the single filing machine are driven from main shaft 23. In addition, the main shaft 27 of the unloading machine is driven from the single tiling machine. through the instrumentality of chain 28passing around sprocket 29 on said main shaft 27. in Fig. 1, reference numeral 31 indicates one of the chains in the unloading machine on which are mounted transversely extending unloading pallets 32 having depending flexible cups 33 which enter into the open mouths of containers 34, and then in sequence grip the containers, strip the shipping cartons (not shown) from the containers and then release the containers. As the containers 34 are released, they are deposited on a single tiling machine pallet 36 hereinafter described.

The single filing machine comprises an elongatedrframe 37 built up of longitudinally extending top and bottom4 channels 38 and 39, respectively, supported by vertical legs 41. On thetop of the machine is a plurality of inverted U-shaped Crossovers 42 attached .to top channels 38. yThere is further provided a plurality oftransverse members 43 at different elevations to support other longitudinally extending members, as hereinafter described in greater detail. The rearward end o-f unloading machine 21 is attached to and supported by frame 37 through the instrumentality of adjustment screws 44.

Main shaft 23 is journalled in bearing blocks 46 adjacent the rearward end of frame 37. Side conveyor drive shaft 47, likewise journalled in frame 37, is driven from mainshaft 23 through sprockets 45 and chain 45s. Pallet drive shaft 48 journalled in frame 37 is driven from shaft 47 by means of sprockets 49 and chainSl. Idler shaft 52 is driven from shaft 47 by means of sprockets 53 and chain 54. Stub shaft 56 mounted on a plate 57 extending Yfrom one side of the machine is driven from shaft 52 by means of sprockets 58 and chain 59. Chain 28, which drives unloading machine 21, is reeved around sprocket 61 on shaft 56 and idler sprockets 62 on stub shafts 63 likewise mounted on plate 57, as best shown in Figs. 1 and 3. A

Sprocket 6.6 on ,shaft 48 drives roller'echain 67 kwhich extends longitudinally ofV the machine, the forward end of chain 67. passing around idler sprocket 63 on transversely'extending shaft 69. The upper" stretch of vchain 67 is supported on track 77 attached to' the top of a small, longitudinally extending channel 73 turned on its side, thereby holding the upper course of chain 67 substantially parallel. Each pallet 36 has a plurality of depending lugs, fourY lugs 79 at the leading edge'ofpallet 36 and four approximately at the midsection. The two innermost lugs 79o are pinned by the inner ends of shafts 82 to connecting pieces 81 which are in turn attached to links of chain 67. Lugs 79 support transversely extending shafts 82 .on Ythe outer ends of which are mounted rollers 83 which, on `the upper stretch of travel of pallets 36, ride on longitudinally extending tracks Sli likewise supported on the upper surfaces of longitudinally extending small channels 86 and cooperate with. track 77 and chain 67 to support pallet 36 horizontal on its longitudinal upper stretch of movement. Rollers S3 are supported cn bottom tracks S7 on the lower stretch of travel of pallet 36 in order to reduce sagging.

The upper surface of each pallet`36 is provided with a plurality of transversely extendingl separators 91 which separate the rows of containers deposited upon the pallet. l'n a ccmmonly employed shipping carton there are 24 containers arranged in four rows of six contai ers each, the containers being arranged in a pattern of Vsix columns and four rows. For the small size container shown in Fig. and in the upper half of Fig. 7, the separators 91a are formed with a forwardly slanted stretch 92 immediately outside the outermost columns of containers marked 1 and 6, respectively, and terminate in short transversely extending stretches 93. The degree of forward slant of stretches 92 increases with each row. For larger dimension containers shown in Fig. 6 and the lower half of Fig. 7, separators 91b are formed with shorter slanted stretches 92h. The purpose of separators 91 is to guide the containers in their lateral movement off pallet 36 during the operation of theA machine, as hereinafter set forth in greater detail. The slanted stretches 92 accommodate transfer of the jars at proper distance between centers depending upon the Velocity of pallet 36 and the angle of the slanted stretches is determined by the initial jar size and spreads the jars apart the exact desired center distance.

Along either side of the path of movement of pallets 36 is a side conveyor 96 on which the containers removed from the pallets are deposited. Each side conveyor 96 is made up of a plurality of plates L-shaped in side elevation, having in the upper stretch of the conveyors horizontally extending platforms 97 dimensioned to receive a single container 34 anda verticallyupstanding.lug 93 on the trailing edge of/platforms 97 which pushes the containers rearwardly. Each conveyor 96 is driven by its respective chain 99 traveling in groove 161 in block 162 which supports the bottom surface of theconveyor. The rearward end of each chain 99 passes around sprocket 103 on shaft 47 and the forward end passes around sprocket 164 on idler shaft 166. Conveyo-rs 96 are onehalf container out of phase with each other to provide for final assembly of all Vthe containers on a single takeaway conveyor, as hereinafter appears.

T he transfer of containers 34 from pallet 36 to side conveyor 96 is accomplished by means of a plurality of horizontally disposed, oblique switching bars 107 supported fromdepending vertical legs 168, the upper ends of which are attached to transverse members 109 which are in turn supported from longitudinal members 111 attached to Crossovers 42. The other switching bars 107 hereinafter described are similarly supported. The forwardmost switch bar 107a is located on one side of the machine and is formed with a beveled point 112a which engages between outermost column of jars marked 1 in Fig. 5 and the next column marked 2. The bar 107a diverges outwardly rearwardly from point 11251 and terminates in a longitudinal stretch 113e parallel and adjacent to theinner edge of side conveyor 96. As shown particularly in Fig. 5, the column of jars marked 1 is pushed laterally olf pallet 36 and onto individual platforms 97 on side conveyors, separators 91, 92 and 93 cooperating with the switch bar to guide and positively control movement of the containers. The speed of travel of conveyors 96 relative to pallets 36 and the spacing between lugs 98 on conveyors 96 relative to thev rows on pallet 36 are such that each jar is properly transferred to an individual platform.

immediately rearwardly of point 112:1 of switch bar 10711 is the point 112b of outwardly rearwardly diverging switch bar 107b located on the opposite side of the ma chine to engage between the columns of jars marked 6 and 5 and transfer the containers marked 6 onto the opposite side conveyor in a manner similar to the transfer of jars marked 1 by means of switch bar 197er. To the rear of bar 107:1 is bar 107C, the forward point 112C of which engages between jars marked 2. and 3 and slants outwardly rearwardly to push the jars marked 2 laterally olf the pallet. Immediately rearwardly of point 112e of switch bar 107C is the point 1120? of switch bar 197i! which engages between the columns of jars marked 5 and 4 and pushes the same laterally sidewardly. It will be seen that the leading jar marked 2 is deposited immediately behind the trailing jar marked 1 and similarly the leading jar marked 5 is deposited immediately behind the trailing jar marked 6.

Turning now to Fig. 6, it will be seen that for the larger diameter jars the points 112e and 112]I are located spaced outwardly relative to points 112:1 and 112b and accordingly the various switch bars 167 are removable and constitute change parts of the machine. Similarly, points 112g and 112h of bars 107g and 197k are displaced outwardly so as to lit properly between rows 2 and 3 and 5 and 6.

Rearwardly of switch bars 107e and 167d are switch bars 157]' and 167k, the point 112]' of oar 167]' fitting between rows marked 3 and 4, separating the same. Bar .lllj is slanted rearwardly outwardly and thus diverts the jars marked 3 into position behind the jars marked 2. Switch bar 167k immediately behind bar 197]' diverts the jars marked 4 into position behind the jars marked 5.

Adjacent the rearward ends of the upper stretches of the side conveyors 96y the containers are shifted laterally inwardly onto transfer conveyors 116. The inner edges of transfer conveyors 116 are spaced apart a distance suiTicient to provide room for single file conveyor 117. Transfer conveyors 116 are relatively wide compared with side conveyors 96. Diagonally disposed guides are fastened to, the inner half of the platforms 118 of transfer conveyors 116 to assist in controlling movement cf the containers in moving olf the transfer conveyor and onto conveyor 132;. Each platform 118 is connected to a pair of longitudinally extending chains 119. he Vrearward ends of cliains'1-19 pass around sprockets 121 on shaft 23 and the forward ends around sprockets 122 on idler shaft 123. The lateral inward movement of the containers is guided by switch members 126 which are suspended by means of vertical legs 127 from transverse bars 12S which are inturn attached to longitudinally extending members 129 depending from Crossovers 42. Guide rails 131 having a V-shaped configuration in top plan prevent the containers from moving laterally inwardly in excessive distance and hence confine the containers to the path best shown at the left end of Fig. 3. As shown particularly in Fig. 11, switch members 126 and `guide rails. 131 each comprise two vertically spaced elements, thereby resisting any tendency of the jar to tip. v There is sufficient clearance between jars 3d and switch members 126 and guide rails 131 so that progress of the jars is not impeded by lack of clearance. Switch members 125 extend from the outer edge of side conveyors 96 rearwardly inwardly to the inner edges of transfer conveyors 116. It will be noted, particularly in Figs. 2 and 3, that the upstanding lugs 132 on conveyors 116 are staggered and hence the jars are deposited alternately from the transfer conveyors onto. the single file conveyor. 1n this respect the staggered relationship is similar to conveyors 96.

Single tile conveyor 117 leads to jar washing machine 22 or other container processing device. Conveyor 117 is driven at its rearward end by the motor (not shown) drivingsuch machine. Single lile conveyor 117 is of a width substantially equal to the diameter of container 34 being received and is shaped in side elevation similar to the shape of side conveyors 96 and transfer conveyor 116, but upstanding lugs 132 are spaced a lesser distance apart. Conveyor platforms 133 are attached to links of continuous roller chain 134 and roller chain 134 is driven from a sprocket (not shown) at its rearward end. The forward end of chain 134 is reeved around a sprocket (not shown) on shaft 136.

Proper timing of the Various shafts is essential to the proper operation of the instant machine. As shown particularly in Figs. 9 and l0, adjustment means 140 for accurately adjusting the timing of the sprockets'driving the chains relative to the shafts is provided. Thus sprocket is annular andY is received on one side of hub 141 formed on wheel 142 keyed to shaft 48. A ring 143 having an inwardly turned flange 144 surrounds the periphery of wheel 142. A plurality of bolts 146 passing through holes in sprocket wheel i9v are received in tapped holes in ring 143. When bolts 111.6 are tightened, wheel 142 is gripped between sprocket wheel 49 and inwardly turned flange 14d of ring 143.

To provide for accurate adjustment of sprocket wheel 9. relative to shaft 48 when bolts 145 are loosened, a semicircular lug 1157 is welded to sprocket wheel 49 having squared ends 14S engaged by. adjustment screws 1455*' threaded into ears 151 on member 152. Member 152 is keyed to shaft lSby key 153 and is also bolted by means of bolts 15d and nuts 156 ytohub 141. vThe outer diameter of member 152 is greater` thangthaty of hub 1/11 and hence member 152 serves to retain sprocket 4) on hub 14,1, but permits rotation of sprocket 49 relative to wheel 142 when bolts 146 are loosened. yBy tightening one of the adjustment screws 149 and loosen'- ing the other, the angular position of sprocket wheel 49 relative to member 152 and hence relative to shaft 4B may be adjusted. Once -proper'adjustment is made, bolts 141-6 are tightened, thereby locking the partsacc'urately in position and relieving adjustment screws 149 of the load of rotating the sprocket.' i

VIn operation, a group of 24 containers 34 positioned in four rows of six containers each is deposited from the unloading machine 21 onto palleto, separators 91 being interspersed between the rows. Direction of movement of pallets 35 and various conveyorsd, 116 and E17. is indicated by arrows in` Fig. 3 kand the ,lengths of.y the arrows indicate the relative speeds of the variousvconveyors. As pallet .36 moves rearwardly, iirst lsvt/itch bar 107er Vpushes the containersin the column marked 1 laterally outwardly onto individual platformsloffone side conveyor 96 and thereafter second switch bar 197.6 moves the outer column of containers marked k6A ontothe opposite side conveyor 96, it'being understood thatlugs 93 of conveyors 96 are staggered. Third switch Abar ltll'c moves the columnV of containers marked 2 onto the first mentioned side conveyor 96 in position directly? behind the containers marked 1 and the fourthl switch bar 107g? moves the containers marked 5 into positionfbehind the containers marked 6 on'the side conveyors 95. The iifth and sixth switch bars ltlj'and '107k move the columns of containers marked 3 and 4, respectively, into position behind the containers marked 2 and 5, respectively, on side conveyors 96. At the rearward end of side conveyors 96 switch bars 125 and guide rails 131 move the containers from side conveyors 96 onto transfer conveyors 11o and thence onto single tile conveyor 117, it being understood that single iile conveyor 117 receives the containers alternately from the two transfer conveyors 116. Hence the group of 24 containers is assembled in a single file on a single conveyor 117, the movement of the containers being positively controlled and guided throughout. The iirst container of the succeeding pallet is deposited immediately behind the last container of the pallet previously handled so that there are no empty spaces between the jars asV they proceed along conveyor 117.

Although the foregoing invention has been described in some detail by way ofl illustration and example for purposes of clarity of understanding, it is understood that certain changes and modications may be practiced within the spirit of the invention and scope of the appended claims. i

What is claimed is:

l. In a single iler machine, a plurality of pallets, means for receiving a regularly shaped group of containers arranged in columns and rows on said pallet, means for advancing said pallets, a lirst conveyor extending longitudinally along and in close proximity to, one side of the path of travel of said pallets and driven in timed relation to said pallets, tirst switch means positioned to engage the outermost first column of containers on a pallet and as said pallet is advanced, to move said first column laterally off said pallet and onto said first conveyor, an-d second switch means positioned to engage the second column on said pallet next to said first column and, as said pallet is advanced, move said second column laterally oir said pallet and onto said first conveyor behind the containers in said first column.

2. A machine according to claim l in which each said pallet is provided with separators on its upper surface, said separators engaging between rows of containers and guiding lateral movement of said containers.

3. A machine according to claim l in which each said pallet is provided with separators on its upper surface, said separators engaging between rows of containers and guiding lateral movement of said containers, the outer portion of at least some of said separators being'disposed at an oblique angle. A4. A machine according to claim l which further comprises thirds'witch means positioned to engage the third column on'said pallet next to said second column, and, assai'd pallet is advanced,move said third column laterally offsaid pallet and onto said rst conveyor behind the containers in said second column.

Y- 5. In a single Atiling machine,V a plurality of pallets, means for receiving a' regularly shaped group of containers arranged in columns and rows on said pallet,

. means forVv advancing s aid pallets,l al iirstzconveyor extending longitudinally along,j1and in close/proximity to',.one side of theV path of travel of said pallets, afs'eco'nd conveyorextending longitudinally along-and Vin'fclose proxmitytofthe side of the path oftravel of said pallets opposite said `first conveyor, means fordrivingvsaidlirst and second conveyors in timed. relationto said pallets, lirstswitch means positioned to moveanoutermosglirst column of containers laterally olfits pallet as saidpallet advances onto said rst conveyon.secondswitchA means positioned to move the opposite outermost secondcolpmri of containers laterally oli said pallet assaird pallet vadvances onto .said second conveyor, and separator means on the .top of said pallet engaging: betweenrows of Containers and cooperating with said lirst and second switch means to guide lateral movement of saidfcontainers; y6. A machine'accordin'g tofclaim'Sy which lfurther lcomprises1 a take-away conveyordriven fn: timed relation to `said pallets, and means for transferring said containers from both said first and second conveyorsonto said take-away conveyor.

7. vIn a single tiling machine, a plurality of pallets, means for receiving a regularly shaped group of containers arranged in columns and rows on said pallet, means for advancing said pallets, a first conveyor extending longitudinally along, and in close proximity to, one side of the path of travel of said pallets, a second conveyor extending longitudinally along, and in close proximity to, the side of the path of travel of said pallets opposite said first conveyor, means for driving said first and second conveyors in timed relation to said pallets, tirst switch means positioned to move an outermost first column of containers laterally off its pallet as said pallet advances onto said first conveyor, second switch means positioned to move the opposite outermost second column of containers laterally off said pallet as said pallet advances onto said second conveyor, third switch means positioned to move the next outermost third column of containers laterally onto said first conveyor behind said first column, and fourth switch means positioned to move the next outermost fourth column of containers laterally off said pallet Vonto said second conveyor behind said second column.

8. A machine according to claim 7 which further comprises iifth switch means positioned to move the two columns at the -center of said pallet laterally off said pallet as said pallet advances, one of said last mentioned columns being moved onto said first conveyor and the other of said last-mentioned columns being moved onto said second conveyor.

9. A machine accordingV to claim 7 which further comprises a take-away conveyor driven in timed relation to said pallets, and means for transferring said containers from both said` first and second conveyors onto said take-away conveyor.

10. A machine according to claim 7 which further comprises a take-away conveyor disposed centrally between said iirst and second conveyors, tir'st and second transfer conveyors disposed between said take-away conveyor and said first and second conveyors, respectively, means for driving said take-away conveyor and first and second transfer conveyors in timed relation to said pallets, and means for switching said containers from said first and second conveyors onto said first and second Vtransfer conv-eyors, respectively, and thence onto said taire-away conveyor.

ll. A ymachine according to claim 7 which further camprises a take-away conveyor driven in timed relation to said pallets, and a pair of stationary angularly disposed switches positioned to push containers inwardly off said first and second conveyors onto said take-away conveyor, the containers on saidfirst andy second conveyors being staggered whereby said containers from said first conveyor are positioned alternately ahead of said containers from saidsecond conveyor.

l2; A machine according to claim 7 which further comprises a take-away conveyor disposed centrally between said iirst and second conveyors, iirst and second transfer conveyors disposed between said take-away conveyor and said first and second conveyors, respectively, means for driving said take-away conveyor and first and second transfer conveyors in timed relation to said pallets', and a pair of stationary angularly disposed switches positioned to push containers inwardly off said first and second conveyors onto said first and second transfer conveyors, respectively, and thence onto said take-away conveyor, the containers on said first and second transfer conveyors being staggered whereby said containers from 'said rst trans'ferV conveyor are Vpositioned alternately aheadv of said containers from said second transfer conveyor.

13. in' a singley filing machine, a plurality of pallets,

, t. means for receiving a regularly shaped group of containers arranged in columns and rows on said pallet, means for advancing said pallets, a first conveyor extending longitudinally along, and in close proximity to, one side ofthe path of travel of said pallets, a second conveyor extending longitudinally along, and in close proximity to, the side of the path of travel of said pallets opposite said first conveyor, means for driving said first and second conveyors in timed relation to said pallets, first switch means positioned to move an outermost first column of containers laterally off its pallet as said pallet advances onto said first conveyor, second switch means positioned to move the opposite outermost second column of containers laterally off said pallet as said pallet advances onto said second conveyor, third switch means positioned to move the next outermost third column of containers laterally onto said first conveyor behind said first column, fourth switch means positioned to move the next outermost fourth column of containers laterally off said pallet onto said second conveyor behind said second column, and fifth switch means positioned to engage between the middle columns of containers and move the columns of containers on opposite sides of the middle toward the adjacent conveyors.

14. Means for adjusting the timing of a rotary member relative to a shaft by which said member is rotated comprising a shaft, an annular rotary member, a collar on said shaft and non-rotatably relative to said shaft having a peripheral ange, a ring around said tiange and having a portion engaging said flange, fastening means for fastening said ring to said rotary member whereby said ange and rotary member are secured for movement together, said fastening means being releasable to permit relative rotative movement of said rotary member and said collar, first adjustment means secured to said rotary member, second adjustment means secured for rotation with said shaft in proximity to said first adjustment means, and at least one adjustment screw carried by one of said adjustment means and engaging the other said adjustment means to adjust the angular position of said rotary member relative to said shaft when said fastening means is released.

15. Means for adjusting the timing of a rotary member relative to a shaft by which said Vmember is rotated comprising a shaft, an annular rotary member, a collar on said shaft and non-rotatable relative to said shaft having a peripheral flange, a ring around said flange and having a portion engaging said flange, fastening means for fastening said ring to said rotary member whereby said flange and rotary member are secured for movement together, said fastening means being releasable to permit relative rotative movement of said rotary member and said collar, an abutment on said rotary member, an adjustment member secured for rotation with said shaft, and at least one adjustment screw carried by said adjustment member and bearing against said abutment to move said rotary member relative to said shaft when said fastening means are released.

16. Means according to claim 15 which further comprises a second adjustment screw carried by said adjustment member and bearing against said abutment, said screws being arranged to move said abutment in opposite directions. I H

17. Means for adjusting the timing of arotary member relative to a shaft by which said member is rotatedjcomprising a shaft, a rotary member movable relative to said` shaft, detachable Vfastening means operable when engaged to lock said shaft and rotary member for rotation together, said fastening means when disengaged permitting relative rotative movement of said shaft and rotary member, first adjustment means carried by said rotary member, second adjustment means secured for rotation with said shaft in proximity to said first adjustment means, and at least one adjustment screw carried by one of said adjustment means and engaging the other said adjustment 9 l0 means to adjust the angular position of said rotary mem- 2,315,880 Stiles Apr. 6, 1943 ber relative to said shaft when said fastening means iS 2,390,875 Firth Dec. 11, 1945 disengaged. 2,555,602 Nutt June 5, 1951 2,558,774 Nordquist et al. July 3, 1951 References Cited in the file 0f this patent 5 2,753,975 Day July 10, 1956 UNITED STATES PATENTS 2,756,553 Ferguson et a1. July 31, 1956 267,391 Woolson Nov. 14, 1882 FOREIGN PATENTS 

